@Tom Jaeger Bingo! Your /etc/udev/rules.d/65-xorg-wacom.rules file did the trick! I seriously wonder, though, why it hadn't worked before. The situation was that I had added the udev rules directly into /lib/udev/rules.d/69-xserver-xorg-input-wacom.rules.
When having it configured that way 'udevadm info --path=/sys/class/tty/ttyS0/ --attribute-walk' gives looking at device '/devices/pnp0/00:08/tty/ttyS0': KERNEL=="ttyS0" SUBSYSTEM=="tty" DRIVER=="" looking at parent device '/devices/pnp0/00:08': KERNELS=="00:08" SUBSYSTEMS=="pnp" DRIVERS=="serial" ATTRS{id}=="WACf004" looking at parent device '/devices/pnp0': KERNELS=="pnp0" SUBSYSTEMS=="" DRIVERS=="" After cleaning up /lib/udev/rules.d/69-xserver-xorg-input-wacom.rules to its original state and installing /etc/udev/rules.d/65-xorg-wacom.rules from comment #12 the digitizer appears to be fully working. The mouse cursor follows the digitizer. Mouseclicks work with both ends of the pen. A brief test with xournal shows pressure sensitivity working as well as the button on the pen. This is great. Thanks for the effort. In case this is helpful to anyone -- this is how the logs look on my Motion Computing LE1700, now that it's working: /var/log/udev: (...) UDEV [1267608189.360156] add /devices/pnp0/00:08 (pnp) UDEV_LOG=3 ACTION=add DEVPATH=/devices/pnp0/00:08 SUBSYSTEM=pnp DRIVER=serial SEQNUM=1316 NAME=Serial Wacom Tablet ID_INPUT=1 ID_INPUT_TABLET=1 x11_driver=wacom (...) /var/log/Xorg.0.log: (...) (II) config/udev: Adding input device Serial Wacom Tablet (/dev/ttyS0) (II) LoadModule: "wacom" (II) Loading /usr/lib/xorg/modules/input/wacom_drv.so (II) Module wacom: vendor="X.Org Foundation" compiled for 1.7.3.902, module version = 0.10.3 Module class: X.Org XInput Driver ABI class: X.Org XInput driver, version 7.0 (**) Option "Device" "/dev/ttyS0" (II) Serial Wacom Tablet: type not specified, assuming 'stylus'. (II) Serial Wacom Tablet: other types will be automatically added. (**) Serial Wacom Tablet: always reports core events (II) Serial Wacom Tablet: hotplugging dependent devices. (**) Option "Device" "/dev/ttyS0" (**) Serial Wacom Tablet eraser: always reports core events (II) XINPUT: Adding extended input device "Serial Wacom Tablet eraser" (type: ERASER) (**) Option "StopBits" "1" (**) Option "DataBits" "8" (**) Option "Parity" "None" (**) Option "Vmin" "1" (**) Option "Vtime" "10" (**) Option "FlowControl" "Xoff" (WW) Serial Wacom Tablet eraser: unable to read ISDV4 % data after 3 tries at (38400) (--) Serial Wacom Tablet eraser: using pressure threshold of 15 for button 1 (--) Serial Wacom Tablet eraser: Wacom General ISDV4 tablet speed=38400 maxX=24576 maxY=18432 maxZ=255 resX=2540 resY=2540 tilt=disabled (--) Serial Wacom Tablet eraser: top X=0 top Y=0 bottom X=24576 bottom Y=18432 resol X=2540 resol Y=2540 (II) Serial Wacom Tablet: hotplugging completed. (II) XINPUT: Adding extended input device "Serial Wacom Tablet" (type: STYLUS) (--) Serial Wacom Tablet: top X=0 top Y=0 bottom X=24576 bottom Y=18432 resol X=2540 resol Y=2540 (...) -- Serial Tablet PCs not supported in lucid https://bugs.launchpad.net/bugs/522318 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs